Drill feed mechanism with recipro-cating nonrotating feed cylinder



Sept. 9, 1952 s. c. MooN 2,610,029

DRILL FEED MECHANISM WITH RECIPROCATING NONROTATING FEED CYLINDER 2 SHEETS-SHEET 2 Filed Sept. 9, 1950 /NVE/VTOE, STERLING CMOQNl By HT'T lY l V l rfIY/l ,r w .M.c..:iiwwwwwwww wm i x wm mm .EN mmv m .v. mm bm mm mv. Pm

Patented Sept. 9, 1952 .UNITED STATES",

CATING NoNltoTATING,FEEDLCYMNDER Y,

Sterling C. Moon, Wol'thingtxm,r 0hio',1assignor to` The J efflteyManufacturingCompanyg;a` corpo# 'ration ofOhio Y,

"Application september 9, 195o;seriarnoiisaoiz 4Claims. ((1255-47)` i H.

.This .invention relatesto a'drill mechanism, 2li-'andithe'fboomisuponvvhichit` '-.is supported",

and an object of the invention is to provide: an whchis` formedlprincipallyfby the yoke l4,:inter improved device of this' type intwhichfthere is a mediate frame lr6 and `necklilgnmay befadjusted rotating augertube which is `fed in'reverse directo al'variety of positions includingV thepositionsrin tionsby a hydraulic feed cylinder, jack orl motor, .5' which said boom.` extends* substantially atfright the partsofwhichare: essentially non-rotating. angles fon-1 oppositesides of the longitudinallaxis.

lOther objects of theinvention will appear-vhereofthe-main frame Hip-i The drill 23 may also.. be.`

inafter;` thenovel ieatures. and combinations beraised and lowered-andthusi.itfmay be'` positioned ingsetyforthA in the appended' claims, at anypositionioveiiwwide face of al mine room.

In the accompanying drawings: l mi Referringparticularly ftol Fgsgr and 4. of. .the Iig.v 1 isa plan viewshowing a `drilling machine drawingsfitfwill b'e'seenA that the drill mechanismY incorporating the drill of my invention 2,3lifn`cludesfa two-piece housingcomprising arean {Fig} 2 fis, a side elevational view ofthe machine cylinder-member 24260' Wh'ha larger-:diameter of Fig. 1; i forwardA cylinder.member` 25-,is,rigdlyfbut.:reev SFig.` 3Ffis aisectonal view- 'through the drilling 1 movably attachedby bcltszorma'chine screws. t mechanism; and l .Mcuntedwithin.thecylinder 25 onfspacedor` Fig.. trisv a sectional view taken on theune 4-4 ward and rearward bearingsfis a `rotaryadrive dyl-` op F153, lookingljn ,thedirection ofthe arrows, inderr26 whichJ at tslefthand.end,.as' viewedfin "Referring nrst toFig-s. 1 and:A 2 ofthe drawings, Fiat 3, -is provided with anffnteeral Spurgear 2LT theldrilling machineill-ustrated incl-udesia main 201 which meshes with andis'drivenv by asnurgear frame `I supported uponffront povierldriven trac- 2B" carried onthe rotonshaft of; avreversible motioniwheels Il and rear steerablewheels 132. Ex-l torf291whohvis preflably-lhyd1'au10, ithug'h li4 tending'forwardly frcmmhe main frame; .m bt mayfbe elect-ric; 'lhe *motor `ifis: 'carriedfonf a. rigidly; attached thereto is ai head1; -Piv01a11y bracketf''"whichlis integral'with thercylinderz attached to thelhead -I3fforswinging movement 2" and- CoolilttesI threwithfto provide;` at housing` upon anl upright axis is a yoke i4 lWhich may be Y for'lthege`ars2'l` and 2B. 1 ,v' '1 ,z il -j .l swung preferably'l through a' fully-18Gfyor'90- to` Y i Atdiametric'ally'. opposite sides. the cylinderf'ZB` each side of the longitudinal forwardV position, by is `provided with al-pairfof removable longitudif means of reversible gearing including ar reversna'lly extendingelongatedtkeys31; which:extend` ible rotary hydraulicmotor lo. The gearing may 304 through slots'in saidcylinder. 2li; as best ,illusinclude the conventional worm and worinvvheel.V tratedinFgA of the: drawings. :TheofunctionA `An intermediate Aframe i6 `extends forward of the keysl i'sutoxprovidea :driving connection from the yoke I4 andis` pivotally attached there between4 `the dri-ven cylinder 26 and.y rotating toon a horizontal axis by pivot means l1. `Svvingauger tube 32v which is. not only rotatableibutisi ingadjustmentfrof the intermediate frame I6 35 mounted#for-reciprocationlvvithinthe housing24, about thehcrizontal axiscf thepivotil is pro- 25'.` 'That'fis, `the `rotating auger` tubeh321 extends vided by apair of h'ydraulicmotors, cylinders-or through a central. opening in a head1 `Ii3rproivided, jacksl! 8, the rear ends of which are pivoted to the on the: right-hand end of the housing tube/215..A yoke, andthefronts ofthe piston rods of which Thetfront fend of the auger tube 32` 'is ProvidedL are pivoted-near'the front and bottomofthe in- 40 with a'headring `l33lrigidlyattachedto said tube termediate frame 16. l 32, as by welding, to which head ring .`t33.,adfri1lf -Extending forward from the front of theihter- Chuck or Asocket `313 is removably? attached, :said

mediate frame lGis a neck I9 Whichis rotatable socketTI/t beingadapt'edl tolreceive` drilb:bitgfinl` aboutitslOngitudinalaxisvbyfappropriate drive a conventional manner, y A, gearing carriedon the'intermediate frame I6 and 45 To provide' for rectilinear `longitudinal recipincluding a rotary hydraulic motor 2li. At the rocationof the auger tube 32-While1itis "driven,

outer-fend of the neck 19" there isa bracket '2l as above described,the external surface thereof' which is adjustable about arraxis4 which is at is provided Witha pairof diametrically 'Opposite right angles to the axis ci the neckfllljthis adlongitudinal keyways 35 adapted to receive-the jus'trnent being "effected" by` a drive mechani`sm, 50 elongatedkeys 3|. To providefor thereciprocal such as a AWorm and Worm 'wheel drive,V driven by motion of the rotary tube 32 and attached partsj a `reversible* rotaryhydraulic motor 2 2. including the chuck 34, I provide a double acting "Carried on top of the bracket 2l .is a drilime'chhydraulic cylinder type motor or jack including anism 2m3.f-fl5y-referring to-Figsl andfZ'of the a' cylinder '36, the left-hand end `offwhi'chfxais draWingsitfWil-l be seenthat the drill mechanism 55 viewed in Figi V.'Sis rigidly attachedtoa=head-f31 of the housing cylinder 25 through the intermediary of a central axially projecting boss or projection 38 with which the cylinder 36 has a close contact.

A bore 39 extends through the head 31 and projection 38. providing a hydraulic passageway to the interiorA of the cylinder 36. Within the, `cylinder 36v there is a piston standard construction, having reversely positioned leak-proof washers adjacent opposite ends; thereof, to which a piston rod 4| is attached ,which extends through the cylinder 36. Rigidly at- 4f! of essentially rotating said auger tube including a cylinder tached to the right-hand end of the cyliner 36,

as viewed in Fig. 3, is a head 42 which isprovided with a stufling box 43 which cooperates with the piston rod 4 At its right-hand end the piston rod 4| is provided with a ball bearing 44, the inner race of which is clamped to the piston rod 4|, the outer race of which is clamped to the head ring |33 and the base of the socket or drill chuck 34. This provides an important characteristic of my invention, in that it permits free rotation of the auger tube 32, its head ring |33 and the drill chuck 34 without requiring similar rotation of the piston rod 4| orthe piston 46. Itis particularly un desirable to rotate the piston 40 because this greatly shortens the life thereof.

Itis obvious that if hydraulic iiuidis delivered to the passageway 39 the piston 40, piston rod 4|, rotary auger tube 32 and chuck 34 will be fed to thel right or outwardly. During this feedingv movement .the interior surface of the rotating auger tube 32 is supported at the right-hand end by turning on the exterior of the head 42 which is preferably made of brass, bronze or the like. At its rear end the tube 32 is provided with a bearing guide ring 45 on its external surface which has sliding contact with the internal surface ofthe housing cylinder 24.

To provide for reverse or retracting movement of the drill chuck 34 and rotary tube 32 there is av pair offeed tubes 46 which extend from a fitting adjacent the rear end ofthe cylinder 24 between the cylinder 36 and the tube 32 and at their right-hand or forward ends communicate with a bore 41 formed in the head 42 and leading to the linterior of the cylinder 36. Hydraulic iluid delivered to feed tubes 46 will tend to force the piston 40, piston rod 4|, rotary auger tube 32 and chuck 34 rearwardly or to the left at a relatively high speed in view of the reduced effective cross-section of the cylinder 36 produced by the large diameter of the piston rod 4|.

Obviously those skilled in the art may make various changes in the details and arrangement of parts without departing from the spirit and scope of the-invention as dened by the claims hereto appended, and applicant therefore wishes not to be `restricted to the precise construction herein disclosed.

Having thus described and shown an embodiment of the invention, what it is desired to secure by Letters Patent of the United States is:

-1'.A drill including la housing adapted to be heldin `,ixedrposition during operation of the drill,.an auger tube mounted for both rotation and vregectilinear-` axial feeding motion in reverse directions relative to said housing and telescoping thereintma drill chuck attached to said auger tube, a feed cylinder rigidly attached to said housing and positioned inside it, said auger tube being mountedv to reciprocate axially outside said feedcylinder and axially inside said holusing,an

operating ,pistonereciprocable within said feed Within said housing and surrounding said auger tube, bearing means supporting said cylinder within said .housing for rotary motion, means slidably interconnecting said cylinder and auger tube whereby the latter is driven rotationally by the former, gear means on said cylinder, a motor carried by said-housing, and a gear driven by said motor for driving said gear on said cylinder.

2. A drill including a housing adapted to be held in iixed position during operation of the drill, an auger tube mounted for both rotation and rectilinear axial feeding motion in reverse directions relative to said housing and telescoping thereinto, a drill chuck attached to said auger tube, a feed cylinder rigidly attached to said housing and positioned inside it, an operating lthereof, means for supporting and rotating said' auger tube including means forming a cylinderv within said housing and surrounding said auger tube, bearing means supporting said cylinder forming means within said housing for rotary motion, means slidably interconnecting said cylinder forming means and said auger tubewhereby the latter is driven rotationally by the former, and motor means for driving said cylinder forming means.

3. A drill including a housing adapted to be held in iixed position during operation of the drill, an auger tube mounted for both rotation and rectilinear axial'ieeding motion -in reverse directions relative to said housing and telescoping thereinto, a drill chuck attached'to said auger tube, a feed cylinder rigidly attached to said housing and positioned inside it, said auger tube being mounted to reciprocate radially outsideV said feed cylinder and radially inside said hous-l ing, an operating piston reciprocable within said feed cylinder, a piston rod attached to said piston adjacent one end of said piston rod, bearing means attaching the other end of said piston rod to said auger tube to impart rectilinear motion of said piston and piston rod to said auger tubewhile said auger tube is free to rotate relative to said piston and piston rod which are essentially non-rotary during operation Yof said drill, means for rotating said auger tube and drill chuck including means forming a cylinder within said housing and surrounding said auger tube, and means slidably interconnecting said cylinder forming means and auger tube whereby the latter is driven rotationally by the former.

4. A drill including a` housing adapted to be to opposite ends of said piston` held in xed position .during operation of the drill, an auger tube mounted for both rotation and rectilinear axial feeding motion in reverse directions relative to said housing and telescoping thereinto, a drill chuck attached to said auger tube, a feed cylinder rigidly attached to said housing and positioned inside it, an operating piston reciprocable within said feed cylinder, a piston rod attached to said piston adjacent one end of said piston rod, bearing means attaching the other end of said piston rod to said auger tube to impart rectilinear motion of said piston and piston rod to said auger tube while said auger tube is free to rotate relative to said piston and piston rod which are essentially nonrotary during operation o1' said drill, means for rotating said auger tube and drill chuck includ- REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 545,596 Legg Sept. 3, 1895 2,319,682 Hibner et al. May 18, 1943 2,541,306 Taylor Feb. 13, 1951 

